Q: What are the factor combinations of the number 725,377?

 A:
Positive:   1 x 72537729 x 25013
Negative: -1 x -725377-29 x -25013


How do I find the factor combinations of the number 725,377?

Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 725,377, it is easier to work with a table - it's called factoring from the outside in.

Outside in Factoring

We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.

1 725,377
-1 -725,377

Why are the negative numbers included?

When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 725,377.

Example:
1 x 725,377 = 725,377
and
-1 x -725,377 = 725,377
Notice both answers equal 725,377

With that explanation out of the way, let's continue. Next, we take the number 725,377 and divide it by 2:

725,377 ÷ 2 = 362,688.5

If the quotient is a whole number, then 2 and 362,688.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 725,377
-1 -725,377

Now, we try dividing 725,377 by 3:

725,377 ÷ 3 = 241,792.3333

If the quotient is a whole number, then 3 and 241,792.3333 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 725,377
-1 -725,377

Let's try dividing by 4:

725,377 ÷ 4 = 181,344.25

If the quotient is a whole number, then 4 and 181,344.25 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 725,377
-1 725,377
Keep dividing by the next highest number until you cannot divide anymore.

If you did it right, you will end up with this table:

12925,013725,377
-1-29-25,013-725,377

More Examples

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